Vaporizer for liquid fuel



Sept. 11 1, 11%23.

' 1,4618%) J. A. LA RUE VAPORIZER FOR LIQUID FUEL Filed NOV. 9. 1920 .rtaaree @234.

unit-inn "stares JESSE A. LA RUE, 01E BIRMINGHAM, ALABAMA.

" veronrznn. roe LIQUID FUEL.

Applicatflon filed November To all whom cit-may concern:

Be it known that T, Jesse A; LA Run, a

citizen of the United States of. America, re-

sidingat Birmingham; in the county of Jeffj ferson and State of Alabama, have invented certain new and useful Improvements in .Vaporizers for Liquid Fuel, of which the following is a specification.

This, invention relates to a vaporizer for liquid fuel having for its object to present the fuel in the most suitable condition for utilization inan internal combustion engine.

the inverted cone apex at a high temperature, the latter being disposed preferably with its axis concentric with the inflowing fuel mixture; and

2nd. The provision of the heating cone with external radiating points or pins so I disposed between the heated cone and its vwill reduce to a minimum the carbon.

casing as to collect all liquid particles in the mixture and effectually vaporize the same,

' tween the pipes 12 and 13 so as to prevent thus delivering to the intake manifold a fuel mixture in completely vaporized form which "troubles in the valves and cylinders and at the same time increase the efficiency of the fuel.

My invention further comprises the novel details of construction and arrangements of parts, which in their preferred embodiment only are illustrated in .the accompanying drawings, in which Fig.1 is a side elevation of a typical motor'showing the application of my vaporizer between the carburetor and intake manifold. Fig. 2 is an enlarged vertical cross sectional view through the vaporizer.

Fig. 3 is a half sectional v1e 'w and half elevation of the heating cone as vlewed at right angles to Fig. 2..

Fig. 4 is abottoignl' view of the heating cone.

Similar reference numerals refer to similar parts throughout the drawings.

I show my invention as applied to an engine '1 which is typical of any internal com bustion engine the'vaporizer 2 being interposed between the carburetor 3 and the inan inverted heating cone interposed in the fuel gaseous duct and i provided with an internal baffle to maintain 9, 1920. Serial No. 422,940.

take manifold 4. A. pipe connection 5, leading from the rear end of the exhaust manifold 6, discharges a part of the hot exhaust gases into the vaporizer from which the gases flow through a pipe 7 and are discharged preferably to the atmosphere or at any suitable point.

As illustrated, the vaporizer comprises an external casing mad up of horizontal half sections 8 and 9, which have marginal flanges 10 that are suitably bolted together and which half sections at diametrically opposite points are provided with a semi-circular boss 11. These bosses, when the half sections are assembled, form a cylindrical seat in which the cylindrical inlet and outlet pipes 12 and 13 for the hollow cone rest and are securely clamped in position. The pipes 5 and 7 are suitably connected to these pipes 12- and 13, respectively. The hollow cone into which the exhaust gases are admitted through the pipe 12, comprises an inverted conical base 14 and a flat top 15 which supports a transverse tapering internal baffle 16, the marginal edges of which are equi-distantly spaced from the inner cone wall so as to leave a substantially uniform clearance under its bottom edge. The baffle is disposed across the cone bedirect flow of the exhaust gases from one pipe to the other and to cause the gases to be deflected downwardly to efi'ectually heat the cone and its apex. As will be noted in Fig. 3, the cone has an upwardly converging annular wall 17 which connects it with the top wall 15 and which stands parallel with the upper casing section 8 so as to avoid restricting the annular passage way for the gaseous fuel. This gaseous fuel enters the casing through a bottom port 18 and .is discharged through a top port 19, these ports being surrounded by suitable collars provided with bolt holes for attachment to appropriate flanges on the carburetor and intake manifold. The outer wall of the cone 1 L carries integral therewith a plurality of downwardly tapering points 20 of such length as substantially to contact with the inner wall of the lower casing section 9 when the device is assembled, and they are so disposed with reference to the vertical vaporizer of any liquid particles in the fuel mixture without contacting with one or the other of these pins and when such contact is established, the particle is arrested and spreads over the pin which is highly heated by conduction from the cone and thus causes the liquid particle to be completely vaporized.

Having assembled the parts in the manner described, the operation of the vaporizer is as follows: The fuel mixture from the car buretor containing, as it usually does, more or less fine particles of unvaporized gasoline or other liquid fuel enters the vaporizer through the bottom port 18 and immediately impinges upon the apex of the cone 14 which is mounted with its vertical axis concentric with the port 18 and is heated by the flow of exhaust gases therethrougli. The mixture is spread by the cone and flows upwardly between the cone and its casing, becoming heated in its passage until it flows past the cone and flows off through port 19 to enter the intake manifold. The most important advantages flow from the efficient manner in which the staggered points 20, which are typical of any suitable means to arrest the liquid particles in the fuel mixture, will collect and vaporize such particles and thus prevent their access to the, intake manifold. The heating of these points increases the rapidlty with which they will vaporize the liquid fuel that they collect and as a result the fuel mixture fiows into the intake manifold at a higher temperature and free of particles of unvaporized liquid fuel. It is obvious that these particles when once arrested will rapidly spread over the pin or :the cone and thus, having increased their surface area exposed to the air in the fuel mixture, they will be very rapidly and effectively vaporized.

This invention isnot intended to be restricted in scope to the specific embodiments shown, but contemplates such modifications as come within the spirit and scope" of the claim.

Having thus described my invention, what I claim as new and desire to secureby Letters Patent, is

A vaporizer of the character described,

comprising a chamber having gaseous fuel inlet and outlet ports, a hollow conical spreader in the chamber having its apex inverted and disposed above and concentric with said inlet port, staggered points carried by the spreader and extending therefrom substantially to the inner wall of the vaporizer, said spreader being spaced from the chamber walls to leave a flaring fuel passage inwhich the points are disposed to intercept any liquid particles in the gaseous fuel, inlet and outlet pipes for passing a heating medium through said hollow cone,

' and a transverse tapered baffle depending in the hollow cone from the top wall thereof and having its-inner ed e substantially equidistantly spaced from t e inside wall of the cone to deflect the heating medium from a direct passage through said cone towards NOMIE WELSH. 

